| 摘要 |
A system and a method for a voice gateway to deliver voice over Internet Protocol (VoIP) via an electronic network for digital data signals comprising IP packets. The system and method operate by transferring and converting voice streams from a Public Switched Telephone Network (PSTN) into IP packets for delivery to a customer premises inter-working (CP-IWF) device via a data port, which is interfaced to customer premises equipment (CPE), wherein the CP-IWF device serves as a gateway (430) between the digital data signals used in the electronic network and the PSTN voice streams. The system includes an access gateway, including a V5.X device for interfacing the electronic network to the PSTN. The system also includes a voice gateway to deliver voice over Internet protocol (VoIP) and a Call Agent (460) to keep track of the calling state between said CP-IWF device and said voice gateway, such that the voice streams are converted from the PSTN/Integrated Services Digital Network (ISDN) into IP packets. |
